PHP multidimensional array value replace with another value

Question

I have an array as below

Array
(
    [0] => Array
        (
            [0] => Pedigree Dry
            [1] => N/A
            [2] => N/A
            [3] => N/A
        )

    [1] => Array
        (
            [0] => Professional Range
            [1] => N/A
            [2] => N/A
            [3] => N/A
        )

    [2] => Array
        (
            [0] => Pedigree Wet
            [1] => N/A
            [2] => N/A
            [3] => N/A
        )

    [3] => Array
        (
            [0] => PMM
            [1] => N/A
            [2] => N/A
            [3] => N/A
        )

    [4] => Array
        (
            [0] => Chappi
            [1] => N/A
            [2] => N/A
            [3] => N/A
        )

    [5] => Array
        (
            [0] => Care & Treat
            [1] => N/A
            [2] => N/A
            [3] => N/A
        )

    [6] => Array
        (
            [0] => Sheba
            [1] => N/A
            [2] => N/A
            [3] => N/A
        )

    [7] => Array
        (
            [0] => Whiskas Dry
            [1] => N/A
            [2] => N/A
            [3] => N/A
        )

    [8] => Array
        (
            [0] => Whiskas Wet
            [1] => N/A
            [2] => N/A
            [3] => N/A
        )

)

The above code is an multidimensional array.But all array elements(except index) is N/A.I want to replace all the N/A with 0. How can I replace all N/A with 0 ?

For something like this since almost all the values are N/A I would probably not bother changing them in the array and instead change them on output. — Michael Berkowski
– Michael Berkowski, Commented Oct 28, 2014 at 13:07
@Michael I know the above idea. i want to pass the above value to another function. In that case what i will do?? — MANOJ
– MANOJ, Commented Oct 28, 2014 at 13:20
If you really need to modify it, then Ali's answer below is a good one. — Michael Berkowski
– Michael Berkowski, Commented Oct 28, 2014 at 13:23

Ali · Accepted Answer · 2014-10-28 13:13:51Z

3

$newArray = array();    
foreach($array as $inner_array) {
    $newArray[] = str_replace("N/A", 0, $inner_array);
}

This loops over all the inner arrays and replaces all "N/A" with a zero and adds them to a new resultant array.

Working Demo

edited Oct 28, 2014 at 13:13

answered Oct 28, 2014 at 13:08

Ali

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2 Comments

vaso123 Over a year ago

how to str_replace a string in an array? str_replace replaces a string in string. basic syntax. anyway, i do not downvoted.

Ali Over a year ago

@lolka_bolka str_replace can replace all array values as it loops all over them. Read the documentation. The third parameter is mixed which means it can be an array. I also included a working demo.

vaso123 · Accepted Answer · 2014-10-28 13:12:36Z

1

Try this:

function replaceNa($var) {
    if ($var == 'N/A' ) {
        return 0;
    } else {
        return $var;
    }
}

$array = array(
    array('Pedigre dry', 'N/A', 'N/A', 'N/A'),
    array('Professional Range', 'N/A', 'N/A', 'N/A'),
    array('Pedigree Wet', 'N/A', 'N/A', 'N/A'),
    array('PMM', 'N/A', 'N/A', 'N/A'),
);


foreach ($array as $key => $item) {

    $array[$key] = array_map('replaceNa', $item);
}

var_dump ($array);

answered Oct 28, 2014 at 13:12

vaso123

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Comments

acupofjose · Accepted Answer · 2014-10-28 13:08:25Z

-1

I'm sure there's a better answer than this.. but you could always just do the nested foreach approach.

//loop through each Array (first level)
foreach ($arrays as $array) 
{
     //create two variables for each sub array so you have access to keys and values
     foreach ($array as $key=>$value) 
     {
         if ($value = "N/A")
         {
              $value = 0;
         }
     }
}

answered Oct 28, 2014 at 13:08

acupofjose

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3 Comments

ʰᵈˑ Over a year ago

You may want to pass $array and $value by reference. foreach ($array as $key=>&$value)

Michael Berkowski Over a year ago

You would need array references in the foreach to actually modify the loop while iterating it (near the top of foreach docs)

Havelock Over a year ago

This will not change the value of the element. Either $array[$key] = 0; or foreach($array as &$value) and then $value = 0;

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